Event organisers aim to raise $18,000 from entry fees and sponsorship from the Sunday, October 5 event, to purchase a state-of-the-art surgical microscope.

The 21 kilometre event will be open to both individuals and relay teams (3 x 7km), and there are also plans for a four kilometre run/walk, as well as a kids' run around North Park oval.

SRH Board Chair, Howard Cooper said the organisation was very excited about hosting the half marathon.

"This event is a spectacular way for local residents, plus family and friends from outside the district to come together for a very important purpose," Mr Cooper said.

"Whether you'd like to test your running endurance or simply enjoy the social aspect, ultimately your involvement will help us raise funds needed for a new ENT microscope for Stawell Hospital. The old microscope is more than 20 years old and desperately needs replacing."

The new high-precision surgical microscope will help surgeons to perform examinations, treatments and ear, nose and throat surgeries.

"The microscope will mainly be used for paediatric patients and the occasional adult patient needing to have grommets inserted into their ear drum and to repair patients' ear drums," Chris Gillmartin, Perioperative Services Manager said.

"This allows patients to have their surgery sooner in the local area rather than being on a waiting list at a major regional hospital."

To register for the half marathon go to www.srh.org.au or pick up a form at Stawell Hospital front reception. For regular updates find the event on Facebook.